I try to get 9 hours every day, but ur right, u can die from sleep deprivation.
Sleep Needs

I pray every day that I will only need 4 hours sleep daily. I would go to bed at 3 in the morning, get up at 7

I eat a lot more salt than sugar. Salt is SOOO GOOD. I also stop drinking about 2 hours before going to bed so I don't have to get up and go to the bathroom

I know, but having to go to the bathroom in the middle of the night is annoying I've eliminated that
People say 7 hours of sleep is enough, but I find that I need 10 hours every day.
According to stats, infants can need up to 19 hours sleep, and teens actually need a MINIMUM of 9 hours to function daily.
I find the best sleeping hours are going to bed at like 12:00-1 and getting up at 10-11.
Also, even if I get 10 hours/day for a week straight, and one day I happen to get only 4 hours, I still feel exhausted.